I have some issues with what I think is the same card, I'm in Sydney, using mythtv. I also have the DViCo Fusion Dual Digital 4 rev 1. (setup details at the end) At first when I scanned I could not get the SBS HD transport. Sometime between 28 Jun and 19 July I stopped being able to tune anything from channel 9 as well. This does not appear to have been triggered by a v4l code change, I did not pull from the tree in that time frame. The symptom I see when it "fails" is that mythv reports some signal, but it fails to get lock. When I try to rescan, I get weird errors - after mythtv-backend stops, I start getting USB errors of this kind: kernel: [ 663.703978] dvb-usb: recv bulk message failed: -110 kernel: [ 663.703994] zl10353: write to reg 62 failed (err = -121)! kernel: [ 664.836658] dvb-usb: recv bulk message failed: -110 kernel: [ 664.836665] zl10353: write to reg 62 failed (err = -121)! kernel: [ 665.699864] dvb-usb: bulk message failed: -110 (4/0) kernel: [ 665.699869] cxusb: i2c read failed kernel: [ 666.832545] dvb-usb: bulk message failed: -110 (5/0) kernel: [ 666.832551] zl10353: write to reg 50 failed (err = -121)! kernel: [ 667.696001] dvb-usb: bulk message failed: -110 (5/0) kernel: [ 667.696016] zl10353: write to reg 50 failed (err = -121)! kernel: [ 668.828433] dvb-usb: bulk message failed: -110 (2/0) kernel: [ 669.691639] dvb-usb: bulk message failed: -110 (4/0) At this point, the channel scan stalls out and the machine is very sluggish because of the DoSing of the USB bus. To recover I have to halt the machine and bring it up again. It's unclear to me if it is a problem with the Dual DIgital 4 or the Dual Digital Express. This appears to be a longstanding issue, existing from 2.6.26 (my kernel) through to 2.6.30 (see http://www.spinics.net/lists/linux-media/msg08244.html) I attempted to avoid the power cycling of the card by loading the tuner module with options tuner_xc2028 no_poweroff=1 in /etc/modprobe.d/options, but with this option turned on I was unable to receive any stations. Alex, just to confirm we have the same card could you post the PCI IDs? When the card is detected I see in syslog: kernel: [ 57.768535] CORE cx23885[0]: subsystem: 18ac:db78, board: DViCO FusionHDTV DVB-T Dual Express [card=11,autodetected] and lspci gives me (lspci -n -s 04:00 && lspci -v -s 04:00) (sudo lspci -n -s 4:00 && sudo lspci -v -s 4:00; ) 04:00.0 0400: 14f1:8852 (rev 02) 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02) Subsystem: DViCO Corporation FusionHDTV DVB-T Dual Express Flags: bus master, fast devsel, latency 0, IRQ 19 Memory at 90000000 (64-bit, non-prefetchable) [size=2M] Capabilities: [40] Express Endpoint IRQ 0 Capabilities: [80] Power Management version 2 Capabilities: [90] Vital Product Data Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- My system details: (cd ~/v4l; hg identify) 2b49813f8482 tip /etc/issue Ubuntu 8.04.3 LTS uname -a 2.6.24-24-generic #1 SMP Tue Aug 18 17:04:53 UTC 2009 i686 GNU/Linux lspci 00:00.0 0600: 8086:29c0 (rev 02) 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:02.0 0300: 8086:29c2 (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02) 00:03.0 0780: 8086:29c4 (rev 02) 00:03.0 Communication controller: Intel Corporation 82G33/G31/P35/P31 Express MEI Controller (rev 02) 00:19.0 0200: 8086:294c (rev 02) 00:19.0 Ethernet controller: Intel Corporation 82566DC-2 Gigabit Network Connection (rev 02) 00:1a.0 0c03: 8086:2937 (rev 02) 00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 0c03: 8086:2938 (rev 02) 00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) 00:1a.2 0c03: 8086:2939 (rev 02) 00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) 00:1a.7 0c03: 8086:293c (rev 02) 00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 0403: 8086:293e (rev 02) 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) 00:1c.0 0604: 8086:2940 (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) 00:1c.1 0604: 8086:2942 (rev 02) 00:1c.2 0604: 8086:2944 (rev 02) 00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 02) 00:1c.3 0604: 8086:2946 (rev 02) 00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 02) 00:1c.4 0604: 8086:2948 (rev 02) 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02) 00:1d.0 0c03: 8086:2934 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 0c03: 8086:2935 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 0c03: 8086:2936 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 0c03: 8086:293a (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 0604: 8086:244e (rev 92) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) 00:1f.0 0601: 8086:2912 (rev 02) 00:1f.0 ISA bridge: Intel Corporation 82801IH (ICH9DH) LPC Interface Controller (rev 02) 00:1f.2 0106: 8086:2922 (rev 02) 00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA AHCI Controller (rev 02) 00:1f.3 0c05: 8086:2930 (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 02:00.0 0101: 11ab:6101 (rev b2) 02:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101 single-port PATA133 interface (rev b2) 04:00.0 0400: 14f1:8852 (rev 02) 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02) 06:00.0 0200: 10ec:8185 (rev 20) 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller (rev 20) 06:01.0 0c03: 1106:3038 (rev 61) 06:01.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) 06:01.1 0c03: 1106:3038 (rev 61) 06:01.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) 06:01.2 0c03: 1106:3104 (rev 63) 06:01.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) 06:03.0 0c00: 104c:8023 06:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) lsusb 00:1f.3 0c05: 8086:2930 (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 02:00.0 0101: 11ab:6101 (rev b2) 02:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101 single-port PATA133 interface (rev b2) 04:00.0 0400: 14f1:8852 (rev 02) 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02) 06:00.0 0200: 10ec:8185 (rev 20) 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller (rev 20) 06:01.0 0c03: 1106:3038 (rev 61) 06:01.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) 06:01.1 0c03: 1106:3038 (rev 61) 06:01.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) 06:01.2 0c03: 1106:3104 (rev 63) 06:01.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) 06:03.0 0c00: 104c:8023 06:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) On 9/7/09, Alex Ferrara <alex@xxxxxxxxxxxxxxxxxx> wrote: > I bought several of these cards over a year ago thinking that they > worked under Linux, but I found that while the cards seem to work > flawlessly for some people, in some geographic locations, they don't > work for me in Goulburn NSW pointing to Mt Gray. > > I have a mythtv backend with 2 x Dvico Dual Digital 4 PCI cards and > they are working perfectly, but the Dual Express cards will not tune > all transports. It seems that Prime and TEN hardly get enough signal > to tune. > > I have done some tests, and under Windows with MCE the cards work > perfectly using the same antenna > > I've heard that these cards have some sort of pre-amp that isn't > getting turned on in Linux. This might be part of the issue. I have > tried increasing signal amplification, but that degrades the other > signals that are working ok without the extra amp. > > If anyone can shed some light, I would be very appreciative > > aF > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html